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In 2010 a commit with no testcase and no further explanation explicitly disabled the handling of inlined variables in EmitFuncArgumentDbgValue(). I don't think there is a good reason for this any more and re-enabling this adds debug locations for variables associated with an LLVM function argument in functions that are inlined into the first basic block. The only downside of doing this is that we may insert a DBG_VALUE before the inlined scope, but (1) this could be filtered out later, and (2) LiveDebugValues will not propagate it into subsequent basic blocks if they don't dominate the variable's lexical scope, so this seems like a small price to pay. rdar://problem/26228128 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@317702 91177308-0d34-0410-b5e6-96231b3b80d8